Zobrazeno 1 - 10
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pro vyhledávání: '"Alexey E. Rastegin"'
Autor:
Alexey E. Rastegin
Publikováno v:
APL Quantum, Vol 1, Iss 2, Pp 026111-026111-7 (2024)
The current study aims to examine uncertainty relations for quantum measurements assigned to a projective two-design. Complete sets of mutually unbiased bases and symmetric informationally complete measurements are important cases of such measurement
Externí odkaz:
https://doaj.org/article/2e72068ffaa64d15b22510418953f044
Autor:
Alexey E. Rastegin
Publikováno v:
Physics, Vol 4, Iss 4, Pp 1413-1425 (2022)
The emergence of a minimal length at the Planck scale is consistent with modern developments in quantum gravity. This is taken into account by transforming the Heisenberg uncertainty principle into the generalized uncertainty principle. Here, the pos
Externí odkaz:
https://doaj.org/article/2fc5b173c1aa4a609c83bbeb112f8736
Autor:
Alexey E. Rastegin
Publikováno v:
Entropy, Vol 20, Iss 5, p 354 (2018)
We address the generalized uncertainty principle in scenarios of successive measurements. Uncertainties are characterized by means of generalized entropies of both the Rényi and Tsallis types. Here, specific features of measurements of observables w
Externí odkaz:
https://doaj.org/article/26f77e11637d49faa8f6734ab1cfc4f9
Publikováno v:
Modern Physics Letters A.
Grover’s search algorithm and similar techniques are widely used in quantum information science. Communication lines with the so-called oracle are one of inevitable vulnerabilities of quantum search. The impact of localized dephasing and amplitude
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22c0f0b41aa1acd0591675bae00bd61c
https://doi.org/10.1142/s021773232350030x
https://doi.org/10.1142/s021773232350030x
Publikováno v:
Quantum Information Processing. 21
We examine how amplitude noise in queries to the oracle degrades a performance of quantum search algorithm. The Grover search and similar techniques are widely used in various quantum algorithms, including cases where rival parties are fighting over
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::301bac3ad8966782e2d59b79102aa6a1
https://doi.org/10.1007/s11128-022-03501-0
https://doi.org/10.1007/s11128-022-03501-0
Autor:
Alexey E Rastegin
Publikováno v:
Physica Scripta. 98:015107
In quantum information science, systems with incomplete information are typically dealt with. To characterize quantumness from different viewpoints, several kinds of non-classical correlations should be described quantitatively. The concept of cohere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::361d1242cab3ea4d5a984599c4edbe60
https://doi.org/10.1088/1402-4896/acaa71
https://doi.org/10.1088/1402-4896/acaa71
Autor:
Alexey E. Rastegin
The concept of quantum coherence and its possible use as a resource are currently the subject of active researches. Uncertainty and complementarity relations for quantum coherence allow one to study its changes with respect to other characteristics o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d0ac93a969b3caae630752eb02568ce
http://arxiv.org/abs/2103.17145
http://arxiv.org/abs/2103.17145
Autor:
Alexey E. Rastegin
Information entropies provide powerful and flexible way to express restrictions imposed by the uncertainty principle. This approach seems to be very suitable in application to problems of quantum information theory. It is typical that questions of su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f912174982d8991dad9966611d500cc4
http://arxiv.org/abs/2004.05576
http://arxiv.org/abs/2004.05576
Autor:
Alexey E. Rastegin
Publikováno v:
International Journal of Theoretical Physics. 57:1425-1439
Quantum fluctuations relations are typically derived with projective measurements of energy at the beginning and the end of the protocol. Though projective measurements are easy to treat theoretically, they may be difficult to implement in experiment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6df034b0d66ca2eb3209640084bae32d
https://doi.org/10.1007/s10773-018-3671-0
https://doi.org/10.1007/s10773-018-3671-0
Autor:
Alexey E. Rastegin
Publikováno v:
Quantum Information and Computation. 16:313-331
We address an information-theoretic approach to noise and disturbance in quantum measurements. Properties of corresponding probability distributions are characterized by means of both the R´enyi and Tsallis entropies. Related information-theoretic m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f8a64be971e8551ea22732a9dfd5573
https://doi.org/10.26421/qic16.3-4-7
https://doi.org/10.26421/qic16.3-4-7